HARRISBURG — Former state Department of Environmental Protection secretary John Hanger aims to be the first person to announce his candidacy for governor in 2014. Hanger's campaign said Monday he'll kick off his bid for the Democratic nomination Wednesday in Philadelphia and Harrisburg and Thursday in Pittsburgh. The 55-year-old Hanger says his campaign will focus on education, jobs, energy and the environment. Hanger is one of several Democrats who have expressed interest in challenging Republican Gov. Tom Corbett's expected re-election bid. Hanger served five years on the state Public Utility Commission and headed the Department of Environmental Protection for nearly three years. He also was the founding president of the environmental group PennFuture.